IEC 62807-3-10:2023

Hybrid communication cables - Part 3-10: Outdoor hybrid cables - Family specification for FTTA hybrid communication cables

IEC 62807-3-10:2023 is a family specification for FTTA (Fibre-To-The-Antenna) outdoor hybrid communication cables. It specifies the design and construction, rated values and characteristics, requirements and test methods, packaging and quality assurance, etc. The FTTA hybrid communication cables are typically but not only installed between the Base Band Unit (BBU) and Remote Radio Unit (RRU; or often called RRH – Remote Radio Head or AAU – Active Antenna Unit), and other scenario that supply electric current to optical communication equipment.

General Information

• Status: Published
• Publication Date: 21-Feb-2023
• ICS: 33.120.20 - Wires and symmetrical cables
• Technical Committee: SC 46C - Wires and symmetric cables
• Drafting Committee: JWG 8 - TC 46/SC 46C/JWG 8
• Current Stage: PPUB - Publication issued
• Start Date: 24-Mar-2023
• Completion Date: 22-Feb-2023

Standards Content (Sample)

IEC 62807-3-10
®

Edition 1.0 2023-02
INTERNATIONAL
STANDARD



Hybrid communication cables –
Part 3-10: Outdoor hybrid cables – Family specification for FTTA hybrid
communication cables
IEC 62807-3-10:2023-02(en)

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IEC 62807-3-10

®


Edition 1.0 2023-02




INTERNATIONAL



STANDARD



















Hybrid communication cables –

Part 3-10: Outdoor hybrid cables – Family specification for FTTA hybrid

communication cables

























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 33.120.20 ISBN 978-2-8322-6526-0




  Warning! Make sure that you obtained this publication from an authorized distributor.


® Registered trademark of the International Electrotechnical Commission

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– 2 – IEC 62807-3-10:2023 © IEC 2023
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, symbols and abbreviated terms . 7
4 Design and construction . 8
4.1 General . 8
4.2 Optical fibre elements . 8
4.3 Current carrying elements . 8
4.4 Strength member . 9
4.5 Filler . 9
4.6 Yarn . 9
4.7 Tape . 9
4.8 Ripcord . 9
4.9 Screen and/or shield . 9
4.10 Moisture barrier . 10
4.11 Inner sheath . 10
4.12 Armouring . 10
4.13 Outer sheath . 10
4.14 Sheath marking . 10
5 Rated values and characteristics . 10
5.1 Minimum bending radius for installation . 10
5.2 Temperature range . 10
5.3 Rated voltages . 10
6 Requirements and test methods . 11
6.1 General . 11
6.2 Construction and length inspection . 11
6.2.1 Construction . 11
6.2.2 Cable length and marking accuracy . 11
6.3 Optical transmission requirements for cabled optical fibre . 11
6.4 Electrical requirements . 12
6.4.1 Conductor DC resistance . 12
6.4.2 Withstand voltage of dielectric . 12
6.4.3 Insulation resistance of current carrying elements . 13
6.5 Mechanical requirements . 13
6.5.1 General . 13
6.5.2 Tensile performance . 14
6.5.3 Crush . 15
6.5.4 Impact . 15
6.5.5 Repeated bending . 15
6.5.6 Torsion . 16
6.5.7 Bend . 16
6.5.8 Abrasion resistance of cable markings . 17
6.6 Environmental requirements . 17
6.6.1 Temperature cycling . 17
6.6.2 UV resistance . 17
7 Packaging . 17

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IEC 62807-3-10:2023 © IEC 2023 – 3 –
8 Quality assurance . 17
Annex A (informative) MICE classification system and its use in this specification . 19
A.1 MICE classification system . 19
A.2 MICE classification and its application in this specification . 19
Annex B (informative) Some example structures of FTTA hybrid cables . 25
Annex C (informative) Blank detail specification and minimum requirements for FTTA
hybrid communication cables . 29
Annex D (informative) Conductor in hybrid cable . 32
D.1 Conductor type . 32
D.2 Insulation material . 32
Annex E (informative) Example of how to calculate the coverage factor formulae of
shield or screen . 33
E.1 Braiding . 33
E.2 Braid angle, β . 33
E.3 Lay factor, K . 33
L
E.4 Filling factor, q . 34
E.5 Coverage factor, K . 34
c
Bibliography . 35

Figure B.1 – Hybrid cable with two optical fibre elements, two current carrying
2
elements and metal shield (2F + 2 × 0,5 mm ) . 25
2
Figure B.2 – Hybrid cable with flexible metal tube armouring (2F + 2 × 1 mm ) . 25
2
Figure B.3 – Hybrid cable with three elements (2F + 2 × 0,5 mm ) . 25
2
Figure B.4 – Combinational hybrid cable (6 × (2F + 2 × 0,5 mm )) . 26
2
Figure B.5 – Hybrid cable with metal tape armouring (I) (2 × 2F + 4 × 1 mm ) . 26
2
Figure B.6 – Hybrid cable with metal tape armouring (II) (2 × 2F + 2 × 2 × 0,5 mm ) . 26
Figure B.7 – Hybrid cable with 2 current carrying elements and 1 optical fibre element . 27
Figure B.8 – Hybrid cable with 8 electrical elements and 6 optical fibre elements . 27
Figure B.9 – Hybrid cable with 16 electrical elements and 2 optical fibre elements . 27
2 2
Figure B.10 – Hybrid cable with shielding (1 × 24F + 12 × conductor 6 mm or 16 mm ) . 27
Figure B.11 – Hybrid cable with 8 electrical elements and 1 optical fibre cable . 28

Table 1 – Optical transmission requirements for cabled optical fibre elements . 12
Table 2 – Test voltages for different rated voltages . 13
Table A.1 – Installed cable environments . 19
Table A.2 – Details of environmental classification and its application in this
specification. 20
Table A.3 – Resistance to solar radiation . 22
Table A.4 – Liquid pollution . 23
Table A.5 – Gaseous pollution resistance . 23
Table A.6 – Gaseous pollution resistance . 24
Table C.1 – Blank detail specification . 29
Table D.1 – The type and code of insulation material and the maximum temperature of
conductor and short circuit temperature . 32
Table E.1 – Braiding formulae variables . 33

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

HYBRID COMMUNICATION CABLES –

Part 3-10: Outdoor hybrid cables –
Family specification for FTTA hybrid communication cables

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 62807-3-10 has been prepared by subcommittee 46C: Wires and symmetric cables, of IEC
technical committee 46: Cables, wires, waveguides, RF connectors, RF and microwave passive
components and accessories. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
46C/1246/FDIS 46C/1251/RVD

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

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IEC 62807-3-10:2023 © IEC 2023 – 5 –
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
This part of IEC 62807 is to be used in conjunction with IEC 62807-3:2023. It is based on the
first edition of that document.
A list of all parts in the IEC 62807 series, published under the general title Hybrid
communication cables, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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HYBRID COMMUNICATION CABLES –

Part 3-10: Outdoor hybrid cables –
Family specification for FTTA hybrid communication cables



1 Scope
This part of IEC 62807 is a family specification for FTTA (Fibre-To-The-Antenna) outdoor hybrid
communication cables. It specifies the design and construction, rated values and characteristics,
requirements and test methods, packaging and quality assurance, etc.
The FTTA hybrid communication cables are typically but not only installed between the Base
Band Unit (BBU) and Remote Radio Unit (RRU; or often called RRH – Remote Radio Head or
AAU – Active Antenna Unit), and other scenario that supply electric current to optical
communication equipment.
The FTTA hybrid communication cables contain optical fibre elements and current carrying
elements under a common outer sheath or other constructions unifying the elements. The
current carrying elements are used only to supply power to the equipment within the
communication network. The current carrying elements are not used for electricity distribution
or transmission, nor for power supply to domestic appliances.
The relationship between each of the MICE classifications in ISO/IEC 11801-1, the
requirements and test methods of hybrid cables being proposed in a specific application are
fully considered and aligned (see Annex A).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60227 (all parts), Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V
IEC 60227-1, Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V – Part 1: General requirements
IEC 60228:2004, Conductors of insulated cables
IEC 60304, Standard colours for insulation for low-frequency cables and wires
IEC 60502-1, Power cables with extruded insulation and their accessories for rated voltages
from 1 kV (Um = 1,2 kV) up to 30 kV (Um = 36 kV) − Part 1: Cables for rated voltages of 1 kV
(Um = 1,2 kV) and 3 kV (Um = 3,6 kV)
IEC 60793-1-40, Optical fibres – Part 1-40: Attenuation measurement methods
IEC 60793-1-44, Optical fibres – Part 1-44: Measurement methods and test procedures –
Cut-off wavelength

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IEC 62807-3-10:2023 © IEC 2023 – 7 –
IEC 60793-1-46, Optical fibres – Part 1-46: Measurement methods and test procedures –
Monitoring of changes in optical transmittance
IEC 60793-1-48, Optical fibres – Part 1-48: Measurement methods and test procedures –
Polarization mode dispersion
IEC 60793-2-10, Optical fibres – Part 2-10: Product specifications – Sectional specification for
category A1 multimode fibres
IEC 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for
class B single-mode fibres
IEC 60794-1-1, Optical fibre cables – Part 1-1: Generic specification − General
IEC 60794-1-21, Optical fibre cables – Part 1-21: Generic specification – Basic optical cable
test procedures – Mechanical test methods
IEC 60794-1-22, Optical fibre cables – Part 1-22: Generic specification – Basic optical cable
test procedures – Environmental test methods
IEC 60794-1-31, Optical fibre cables – Part 1-31: Generic specification – Optical cable elements
– Optical fibre ribbon
IEC 60794-1-403, Optical fibre cables – Part 1-403: Generic specification – Basic optical cable
test procedures – Electrical test methods – Electrical continuity test of cable metallic elements,
method H3
IEC 60794-2, Optical fibre cables – Part 2: Indoor cables − Sectional specification
IEC 60794-3:2022, Optical fibre cables – Part 3: Outdoor cables – Sectional specification
IEC 62807-3:2023, Hybrid communication cables – Part 3: Outdoor hybrid cables – Sectional
specification
IEC 62821 (all parts), Electric cables – Halogen-free, low smoke, thermoplastic insulated and
sheathed cables of rated voltages up to and including 450/750 V
IEC 62821-1, Electric cables – Halogen-free, low smoke, thermoplastic insulated and sheathed
cables of rated voltages up to and including 450/750 V – Part 1: General requirements
IEC 63294, Test methods for electric cables with rated voltages up to and including 450/750 V
ISO/IEC 11801-1:2017, Information technology – Generic cabling for customer premises – Part
1: General requirements
3 Terms, definitions, symbols and abbreviated terms
For the purposes of this document, the terms, definitions, symbols and abbreviated terms given
in IEC 62807-3, IEC 60794-1-1, IEC 60227-1, IEC 62821-1 and IEC 60502-1 apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:

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• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
4 Design and construction
4.1 General
This hybrid cable is typically composed of optical fibre elements and current carrying elements
with strength member, filler, yarn, tape, ripcord, screening and/or shield, moisture barrier,
sheath or armouring, etc. The hybrid cable shall be designed to meet the requirements of cable
application and operating environment.
Some examples of structures of typical FTTA hybrid cables are shown in Annex B. Annex C
describes a blank detail specification for FTTA hybrid cables and incorporates some minimum
requirements.
4.2 Optical fibre elements
The optical fibre elements shall be in accordance with the following:
a) The optical fibre elements shall be composed of one or more optical fibres, tight or semi-
tight buffered fibres, fibre ribbons, buffer tubes, other optical core structures, or independent
optical fibre cables (such as loose tube cable). The construction and number of optical fibre
elements shall be specified in the relevant specification.
b) The optical fibres can be single-mode fibres and shall comply with the requirements of
IEC 60793-2-50, or may be multi-mode fibres and shall comply with the requirements of
IEC 60793-2-10.
c) The tight buffer shall be removable from the fibre for termination. The semi-tight buffer shall
be easily removable from the fibre in longer strip lengths than the tight buffer. The tight or
semi-tight buffer should be made of thermoplastic material or ultraviolet cured resin.
d) The optical fibre ribbon shall comply with IEC 60794-1-31 or the relevant specification.
e) Optical core structures shall comply with IEC 60794-2 or IEC 60794-3 or the relevant
specification.
f) For ease of identification, all the optical fibre and optical fibre elements shall be identified,
for example colour coding, ring marking, printing or some other methods agreed between
the customer and supplier. If the primary coated fibres are coloured for identification, the
coloured coating shall be readily identifiable throughout the lifetime of the cable and the
coloured coating shall comply with IEC 60304. Additional information can be found in
IEC TR 63194.
g) The material of the optical elements’ sheath or loose tube may be polyethylene,
polypropylene, polybutylene terephthalate (PBT), low smoke halogen free material,
polyvinyl chloride, or other materials suitable to the application.
4.3 Current carrying elements
The design of conductor cross-sections shall be in accordance with the rated voltage,
transmission distance and consumed power of the powered device. Under normal operating
conditions, the temperature increase caused by the power transmission shall not exceed the
maximum conductor temperature of the current carrying elements as specified in Table D.1 of
Annex D.
Current carrying elements shall meet the requirements of the appropriate specification before
being assembled into hybrid cables. For example, for a rating voltage up to and including
450/750 V, current carrying elements shall meet the requirements of the IEC 60227 series or
the IEC 62821 series. For a rating voltage of 0,6/1 kV, the current carrying elements shall meet
the requirements of IEC 60502-1.

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IEC 62807-3-10:2023 © IEC 2023 – 9 –
The conductor should be continuous and without joints through the length of the hybrid cable.
4.4 Strength member
For a layer stranded cable core with strength members in the centre of the optical element,
materials specified in IEC 60794-3 should be used. Other strength members shall be placed in
a suitable position, according to the structure of the hybrid cable.
4.5 Filler
To make the cable core achieve its design shape, fillers with specified outside diameter or other
shape are used to fill the vacancy in the cable core.
4.6 Yarn
Hybrid cables may have yarns. Those yarns should be non-hygroscopic and non-oil absorption
with enough tensile strength to meet cable tensile requirements. Water blocking yarns may be
used.
4.7 Tape
The cable core may be protected by a tape or tapes, applied longitudinally or helically. The tape
may provide thermal insulation and/or provide dielectric properties. Yarns per 4.6 may be used
in conjunction with tapes.
The material may be polyester, polyester non-woven tape, water-blocking tape or other
materials specified in the detail specifications.
4.8 Ripcord
If required, a ripcord(s) may be provided over the cable core and should be continuous through
the entire length of the hybrid cable. It shall be non-hygroscopic, non-oil absorption and have
enough strength to cut the hybrid cable sheath.
The ripcord shall be capable of ripping the sheath for a distance of 1 m when tested in
accordance with IEC 60794-1-21, method E25.
4.9 Screen and/or shield
A screen may be used to minimize electromagnetic noise induced by currents. The screen may
be outside the metallic core components or within them.
Screens or shields may be single/multi-layer longitudinal or wrapped metallic tapes, or may be
foils laminated to a plastic tape, or single/multi-layer wrapped or braided (woven) wires, or a
combination of all of these.
In case a collective screen is needed for national safety region, the design shall follow these
requirements i.e. the same cross-section as the current carrying elements. When a braided
single-layer shield or screen is employed, the braid coverage factor should not be less than
80 %. When a braided double-layer shield or screen is employe
...